[v3,8/8] btrfs: introduce rescue=all

Commit Message

Josef Bacik Oct. 9, 2020, 8:07 p.m. UTC

Now that we have the building blocks for some better recovery options
with corrupted file systems, add a rescue=all option to enable all of
the relevant rescue options.  This will allow distro's to simply default
to rescue=all for the "oh dear lord the world's on fire" recovery
without needing to know all the different options that we have and may
add in the future.

Reviewed-by: Qu Wenruo <[e-mail]>
Signed-off-by: Josef Bacik <[e-mail]>
---
 fs/btrfs/super.c | 11 +++++++++++
 fs/btrfs/sysfs.c |  1 +
 2 files changed, 12 insertions(+)

Patch

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index becb61204eb5..fb468bab1114 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -362,6 +362,7 @@  enum {
 	Opt_nologreplay,
 	Opt_ignorebadroots,
 	Opt_ignoredatacsums,
+	Opt_all,
 
 	/* Deprecated options */
 	Opt_recovery,
@@ -461,6 +462,7 @@  static const match_table_t rescue_tokens = {
 	{Opt_ignorebadroots, "ibadroots"},
 	{Opt_ignoredatacsums, "ignoredatacsums"},
 	{Opt_ignoredatacsums, "idatacsums"},
+	{Opt_all, "all"},
 	{Opt_err, NULL},
 };
 
@@ -512,6 +514,15 @@  static int parse_rescue_options(struct btrfs_fs_info *info, const char *options)
 			btrfs_set_and_info(info, IGNOREDATACSUMS,
 					   "ignoring data csums");
 			break;
+		case Opt_all:
+			btrfs_info(info, "enabling all of the rescue options");
+			btrfs_set_and_info(info, IGNOREDATACSUMS,
+					   "ignoring data csums");
+			btrfs_set_and_info(info, IGNOREBADROOTS,
+					   "ignoring bad roots");
+			btrfs_set_and_info(info, NOLOGREPLAY,
+					   "disabling log replay at mount time");
+			break;
 		case Opt_err:
 			btrfs_info(info, "unrecognized rescue option '%s'", p);
 			ret = -EINVAL;
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index 8edc51f3d894..862c954b7f69 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -334,6 +334,7 @@  static const char *rescue_opts[] = {
 	"nologreplay",
 	"ignorebadroots",
 	"ignoredatacsums",
+	"all",
 };
 
 static ssize_t supported_rescue_options_show(struct kobject *kobj,